I recently had to get a new TV, and I ended up with an Emerson 19" flat-screen. I tried hooking up my Wii, but I'm unable to get a good picture. I get no picture at all when I hook it up to the video output. I tried plugging the video cable into the HD output, but that only gives me a black and white picture. Am I missing something, or does it sound like there's something wrong with the TV?